fix error and add CreatePurchaseOrder.cs

PyroFetes/Endpoints/PurchaseOrders/CreatePurchaseOrder.cs

@@ -0,0 +1,52 @@
+using FastEndpoints;
+using PyroFetes.DTO.PurchaseOrder.Request;
+using PyroFetes.DTO.PurchaseOrder.Response;
+using PyroFetes.DTO.PurchaseProduct.Request;
+using PyroFetes.DTO.PurchaseProduct.Response;
+using PyroFetes.Models;
+using PyroFetes.Repositories;
+using PyroFetes.Specifications.Products;
+using PyroFetes.Specifications.PurchaseOrders;
+
+namespace PyroFetes.Endpoints.PurchaseOrders;
+
+public class CreatePurchaseOrder(
+    PurchaseOrdersRepository purchaseOrdersRepository,
+    ProductsRepository productsRepository,
+    AutoMapper.IMapper mapper) : Endpoint<CreatePurchaseOrderDto, GetPurchaseOrderDto>
+{
+    public override void Configure()
+    {
+        Post("/purchaseOrders");
+        AllowAnonymous();
+    }
+
+    public override async Task HandleAsync(CreatePurchaseOrderDto req, CancellationToken ct)
+    {
+        var purchaseOrder = new PurchaseOrder
+        {
+            PurchaseConditions = req.PurchaseConditions ?? "Conditions non précisées",
+            PurchaseProducts = new List<PurchaseProduct>()
+        };
+
+        foreach (var line in req.Products)
+        {
+            var product = await productsRepository.GetByIdAsync(line.ProductId, ct);
+            if (product == null)
+            {
+                await Send.NotFoundAsync(ct);
+                return;
+            }
+
+            purchaseOrder.PurchaseProducts.Add(new PurchaseProduct
+            {
+                ProductId = product.Id,
+                Quantity = line.Quantity,
+            });
+        }
+
+        await purchaseOrdersRepository.AddAsync(purchaseOrder, ct);
+
+        await Send.OkAsync(mapper.Map<GetPurchaseOrderDto>(purchaseOrder), ct);
+    }
+}